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Polymer compounding of graphene and related materials for advanced composite manufacturing

用于先进复合材料制造的石墨烯及相关材料的聚合物复合

基本信息

批准号：
1951113
负责人：
金额：
--
依托单位：
University of Cambridge
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1951113
关键词：
Polymer compounding graphene related materials

项目摘要

Thermoplastic polymers and composites were perhaps one of the greatest material discoveries of the past century, while 3d printing is becoming the most significant manufacturing discovery of this century. Combined, they have enabled significant technological advancement in the capabilities of different products ranging from packaging to automotive to planes, and even space technology. The continued research and advancement of these technologies will impact nearly all areas of society in coming years. The most recent research into thermoplastic composites and 3d printing has come on the heels of the discovery of layered and 2-dimensional materials, such as graphene. Graphene is single sheet of graphite, which is a single atom thick with carbon atoms arranged in a hexagonal lattice. It has garnered excitement in the research and industrial community due to its outstanding mechanical, electrical, thermal, and optical properties, among others. It's application in the field of composites has already enabled the fabrication of lighter, stronger, conductive materials, capable of replacing metals and currently used composites in many high-performance systems. While graphene has shown its potential in these fields, research efforts are now aimed at moving these technologies from 'lab to fab'. This included not only the mass production of composite-ready graphene materials, but the techniques and industrial scale processes for their incorporation and integration into polymers and existing systems. This project will address each level of these considerations by investigating scale-up production techniques of graphene and layered materials and their thermoplastic composites with particular care for additive manufacturing techniques.Considering these aims, this project is investigating the scale up of graphene production using environmentally friendly processes, such as the liquid phase exfoliation of graphene in water through the use of high-pressure homogenization. This technique provides large scale production of high-quality graphene for use in composites at the ton-scale per year. The resulting material is characterized by UV-Vis spectroscopy, Raman spectroscopy, atomic force microscopy, and scanning electron microscopy. Next, the produced materials are incorporated into polymers through several available processes, such as extrusion to produce pellets or 3d printing filaments, or through high shear incorporation in the high-pressure homogenizer with powdered polymers. The resulting composites are analysed using thermogravimetric analysis, differential scanning calorimetry, and laser flash analysis for the thermal properties, while tensile testing is used for mechanical characterization. The final step in moving these technologies to industry requires the demonstration of fabrication techniques. The composite materials are then compression molded, 3d printed, and injection molded, demonstrating the viable routes to industry for graphene-based materials from material synthesis to final device fabrication.

热塑性聚合物和复合材料可能是上个世纪最伟大的材料发现之一，而3d打印正在成为本世纪最重要的制造业发现。两者结合在一起，使得从包装到汽车到飞机，甚至是空间技术等不同产品的能力取得了重大的技术进步。这些技术的持续研究和进步将在未来几年影响社会的几乎所有领域。最近对热塑性复合材料和3d打印的研究紧跟在层状和二维材料（如石墨烯）的发现之后。石墨烯是单层石墨，它是由碳原子排列成六边形晶格的单原子厚度。由于其出色的机械、电气、热学和光学特性，它在研究和工业界引起了人们的兴奋。它在复合材料领域的应用已经使制造更轻、更强、导电的材料成为可能，能够取代金属和目前在许多高性能系统中使用的复合材料。虽然石墨烯已经在这些领域展示了它的潜力，但研究工作现在的目标是将这些技术从“实验室”转移到“工厂”。这不仅包括复合石墨烯材料的大规模生产，还包括将其整合到聚合物和现有系统中的技术和工业规模工艺。该项目将通过研究石墨烯和层状材料及其热塑性复合材料的规模化生产技术，特别是增材制造技术，来解决这些问题。考虑到这些目标，该项目正在研究使用环保工艺扩大石墨烯生产的规模，例如通过使用高压均质技术在水中对石墨烯进行液相剥离。该技术每年可大规模生产用于复合材料的高质量石墨烯。通过紫外可见光谱、拉曼光谱、原子力显微镜和扫描电子显微镜对所得材料进行了表征。接下来，通过几种可用的工艺将生产的材料掺入聚合物中，例如挤压生产颗粒或3d打印长丝，或通过高压均质机中的高剪切掺入粉末状聚合物。所得到的复合材料使用热重分析、差示扫描量热法和激光闪光分析进行热性能分析，而拉伸测试用于机械性能表征。将这些技术应用于工业的最后一步需要展示制造技术。然后对复合材料进行压缩成型、3d打印和注塑成型，展示了石墨烯基材料从材料合成到最终设备制造的可行工业路线。